555861120 has 64 divisors (see below), whose sum is σ = 1771813440. Its totient is φ = 148229120.

The previous prime is 555861113. The next prime is 555861157. The reversal of 555861120 is 21168555.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142836 + ... + 146675.

It is an arithmetic number, because the mean of its divisors is an integer number (27684585).

Almost surely, 2^555861120 is an apocalyptic number.

It is an amenable number.

555861120 is an abundant number, since it is smaller than the sum of its proper divisors (1215952320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555861120 is a wasteful number, since it uses less digits than its factorization.

555861120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289533 (or 289521 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 555861120 is about 23576.7071492183. The cubic root of 555861120 is about 822.2213811641.

Adding to 555861120 its sum of digits (33), we get a triangular number (555861153 = T₃₃₃₄₂).

The spelling of 555861120 in words is "five hundred fifty-five million, eight hundred sixty-one thousand, one hundred twenty".